JP2018137212A - Backlight module and surface light source assembly of the same - Google Patents

Backlight module and surface light source assembly of the same Download PDF

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Publication number
JP2018137212A
JP2018137212A JP2018012138A JP2018012138A JP2018137212A JP 2018137212 A JP2018137212 A JP 2018137212A JP 2018012138 A JP2018012138 A JP 2018012138A JP 2018012138 A JP2018012138 A JP 2018012138A JP 2018137212 A JP2018137212 A JP 2018137212A
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Prior art keywords
light source
light
source assembly
groove
guide plate
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Japanese (ja)
Inventor
樺 陳
Ka Chin
樺 陳
俊翔 許
Chun-Hsiang Hsu
俊翔 許
威慶 ▲呉▼
威慶 ▲呉▼
Wei-Ching Wu
凡鈞 林
Fan-Chun Lin
凡鈞 林
中宏 方
Chung-Hung Fang
中宏 方
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Young Lighting Technology Inc
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Young Lighting Technology Inc
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a surface light source assembly which improves a luminance unevenness problem of a direct type and combined type backlight module using a plurality of light guide plates.SOLUTION: A surface light source assembly 10 includes a light source 11 and a light guide plate 12. The light source 11 includes a plurality of light emitting surfaces 111, and each light emitting surface 111 has a light emitting angle range. The light guide plate 12 has a bottom surface 121 and an emission surface opposing to each other and at least one side surface 123 for connecting between the bottom surface 121 and the emission surface. At the bottom surface 121, a storage tank 124 is provided for storing the light source, and these light emitting surfaces 111 face at least one of the side surfaces 123. The light guide plate 12 also includes a plurality of groove structures 126 positioned within the light emitting angle range of these light emitting surfaces 111 and for reflecting one part of light rays emitted by these light emitting surfaces 111 to the outside of the light emitting angle range.SELECTED DRAWING: Figure 1

Description

本発明は光源モジュールに関し、特にバックライトモジュール及びその面光源アセンブリに関する。   The present invention relates to a light source module, and more particularly to a backlight module and its surface light source assembly.

液晶表示装置の液晶表示パネルは発光しないため、バックライトモジュールによって面光源を提供する必要がある。バックライトモジュールは直下型バックライトモジュールとエッジライト型バックライトモジュールを含む。今よく見られるエッジライト型バックライトモジュールは、導光板の横側に発光ダイオードライトバーを配置し、導光板の内部に網点を設置して、発光ダイオードライトバーが提供した光線が導光板に入った後、網点によって光線が導光板の出光面から出射される。しかし、発光ダイオードライトバーが導光板の横側に配置されるため、輝度ムラの問題になり易く、かつローカルディミング（ｌｏｃａｌ ｄｉｍｍｉｎｇ）に不利である。   Since the liquid crystal display panel of the liquid crystal display device does not emit light, it is necessary to provide a surface light source by a backlight module. The backlight module includes a direct type backlight module and an edge light type backlight module. The edge light type backlight module often seen now has a light emitting diode light bar on the side of the light guide plate and a halftone dot inside the light guide plate so that the light beam provided by the light emitting diode light bar can be applied to the light guide plate. After entering, the light beam is emitted from the light exit surface of the light guide plate by the halftone dots. However, since the light emitting diode light bar is disposed on the side of the light guide plate, it is liable to be a problem of luminance unevenness and is disadvantageous for local dimming.

今よく見られる直下型バックライトモジュールは、二次元アレイ状に配列された複数の発光ダイオードを拡散板の下方に配置し、発光ダイオードの数を減らすため、各発光ダイオードに対応させて二次レンズを設置して、発光ダイオードの出光角度を拡大するものである。エッジライト型バックライトモジュールに比較すると、直下型バックライトモジュールはより優れた輝度均一性を有し、かつローカルディミングに有利であるが、厚さが比較的に厚い問題がある。   The direct type backlight module often seen now has a plurality of light emitting diodes arranged in a two-dimensional array below the diffuser plate, and a secondary lens corresponding to each light emitting diode in order to reduce the number of light emitting diodes. To expand the light emission angle of the light emitting diode. Compared to the edge light type backlight module, the direct type backlight module has better luminance uniformity and is advantageous for local dimming, but has a problem that the thickness is relatively large.

従来技術による別のタイプの複合式バックライトモジュールは、複合式バックライトモジュール全体の厚さを低減するよう、直下型バックライトモジュールに用いられる二次レンズの代わりに主に複数の導光板を利用している。しかし、各導光板の隅にはっきりした暗領域が発生しやすいため、従来の複合式バックライトモジュールには輝度ムラの問題があった。   Another type of composite backlight module according to the prior art mainly uses a plurality of light guide plates instead of the secondary lens used in the direct backlight module to reduce the overall thickness of the composite backlight module. doing. However, since a clear dark region is likely to occur at the corner of each light guide plate, the conventional composite backlight module has a problem of uneven brightness.

この「背景技術」部分は、本発明の内容の理解を促すためにあり、「背景技術」部分で開示された内容には、当業者が既知の従来技術を構成しないものも含まれている可能性がある。「背景技術」部分で開示された内容は、当該内容または本発明の一つ若しくは複数の実施例で解決しようとする課題を示すものではなく、また本発明が出願前に既に当業者に把握され、または認識されていることを意味するものではない。   This "background art" part is intended to facilitate understanding of the contents of the present invention, and the contents disclosed in the "background art" part may include those that do not constitute prior art known to those skilled in the art. There is sex. The contents disclosed in the “Background” section do not indicate the contents or problems to be solved by one or more embodiments of the present invention, and the present invention has already been grasped by those skilled in the art before filing. Does not mean that it is recognized.

本発明は、バックライトモジュールに応用することが可能な、従来の複合式バックライトモジュールの輝度ムラ問題を改善する面光源アセンブリを提供する。   The present invention provides a surface light source assembly that can be applied to a backlight module and improves the luminance unevenness problem of a conventional composite backlight module.

本発明は、従来の複合式バックライトモジュールの輝度ムラ問題を改善するバックライトモジュールを提供する。   The present invention provides a backlight module that improves the luminance unevenness problem of a conventional composite backlight module.

本発明のその他の目的及び利点について、本発明が開示する技術的特徴から一層理解を深めることができる。   Other objects and advantages of the present invention can be further understood from the technical features disclosed by the present invention.

前記一つ若しくは一部若しくはすべての目的、またはその他の目的を達成するために、本発明の一実施例は光源及び導光板を含む面光源アセンブリを提供する。光源は複数の発光面を有し、発光面それぞれが発光角度範囲を有する。導光板は、対向する底面と出光面、及び底面と出光面との間を接続する少なくとも一つの側面を有する。底面は光源を収容する収容槽を有し、かつこれらの発光面が前記少なくとも一つの側面に面している。導光板は、これらの発光面の発光角度範囲の内に位置し、これらの発光面が発する一部の光線を前記発光角度範囲の外まで反射する複数の溝構造をさらに有する。   In order to achieve one or some or all of the above objects or other objects, an embodiment of the present invention provides a surface light source assembly including a light source and a light guide plate. The light source has a plurality of light emitting surfaces, and each light emitting surface has a light emission angle range. The light guide plate has at least one side surface connecting the bottom surface and the light exit surface, and the bottom surface and the light exit surface. The bottom surface has a storage tank for storing a light source, and these light emitting surfaces face the at least one side surface. The light guide plate further includes a plurality of groove structures that are located within the light emission angle range of these light emission surfaces and reflect some of the light rays emitted from these light emission surfaces to the outside of the light emission angle range.

前記一つ若しくは一部若しくはすべての目的、またはその他の目的を達成するために、本発明の一実施例は複数の前記面光源アセンブリを含むバックライトモジュールを提供し、これらの面光源アセンブリの導光板が繋ぎ合わせられて一体となる。   In order to achieve the one or some or all of the objects, or other objects, an embodiment of the present invention provides a backlight module including a plurality of the surface light source assemblies, and the surface light source assemblies are provided. The light plates are joined together.

本発明の実施例の面光源アセンブリは、導光板が複数の溝構造を有し、これらの溝構造が光源の発光面が発する一部の光線を発光面の発光角度範囲の外まで反射できるため、従来の複合式バックライトモジュールの導光板の隅暗領域の問題を改善し、輝度の均一性を高めることができる。本発明の実施例のバックライトモジュールは、複数の前記面光源アセンブリを用いるため、従来の複合式バックライトモジュールの輝度ムラ問題を改善できる。   In the surface light source assembly of the embodiment of the present invention, the light guide plate has a plurality of groove structures, and these groove structures can reflect some light rays emitted from the light emitting surface of the light source to outside the light emitting angle range of the light emitting surface. The problem of the corner dark region of the light guide plate of the conventional composite backlight module can be improved and the luminance uniformity can be enhanced. Since the backlight module of the embodiment of the present invention uses a plurality of the surface light source assemblies, it can improve the luminance unevenness problem of the conventional composite backlight module.

本発明の前記及びその他の目的、特徴と利点をより明確に示すため、以下は実施例に基づき、かつ図面を参照しながら詳しく説明する。
本発明の一実施例の面光源アセンブリの底面概略図である。 図１の断面線Ａ‐Ａに沿った断面概略図である。 本発明の別の実施例の面光源アセンブリの光源の概略図である。 本発明の別の実施例の面光源アセンブリの底面概略図である。 本発明の別の実施例の面光源アセンブリの底面概略図である。 本発明の別の実施例の面光源アセンブリの断面概略図である。 本発明の一実施例のバックライトモジュールの概略図である。 In order to more clearly show the above and other objects, features and advantages of the present invention, the following will be described in detail based on examples and with reference to the drawings.
It is the bottom schematic of the surface light source assembly of one Example of this invention. FIG. 2 is a schematic cross-sectional view taken along a cross-sectional line AA in FIG. 1. It is the schematic of the light source of the surface light source assembly of another Example of this invention. It is the bottom schematic of the surface light source assembly of another Example of this invention. It is the bottom schematic of the surface light source assembly of another Example of this invention. It is a cross-sectional schematic of the surface light source assembly of another Example of this invention. It is the schematic of the backlight module of one Example of this invention.

本発明の前記およびその他の技術内容、特徴および効果は、以下の図面を参照した好ましい実施例の詳細な説明において明確に示されている。以下の実施例において言及される方向用語、例えば、上、下、左、右、前または後などは図面を参照する方向のみである。従って、これらの方向用語は説明目的のみに用いられ、本発明を制限するものではない。   The foregoing and other technical contents, features, and advantages of the present invention are clearly shown in the following detailed description of preferred embodiments with reference to the drawings. Directional terms referred to in the following examples, such as up, down, left, right, front or back, are only directions referring to the drawings. Accordingly, these directional terms are used for illustrative purposes only and do not limit the present invention.

図１は本発明の一実施例の面光源アセンブリの底面概略図であり，図２は図１の断面線Ａ−Ａに沿った断面概略図であるが、図２では図１の点状微構造Ｓが省略されている。図１と図２を参照すると、本実施例の面光源アセンブリ１０は光源１１及び導光板１２を含み、光源１１は複数の発光面１１１を有し、発光面１１１それぞれが発光角度範囲１１２を有する。導光板１２は対向する底面１２１と出光面１２２、及び底面１２１と出光面１２２との間を接続する少なくとも一つの側面１２３を有し、底面１２１は光源１１を収容する収容槽１２４を有し、かつこれらの発光面１１１が前記少なくとも一つの側面１２３に面している。導光板１２はさらに、これらの発光面１１１の発光角度範囲１１２の内に位置し、これらの発光面１１１が発する一部の光線を発光角度範囲１１２の外まで反射する複数の溝構造１２５を有する。   FIG. 1 is a schematic bottom view of a surface light source assembly according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along a cross-sectional line AA in FIG. The structure S is omitted. Referring to FIGS. 1 and 2, the surface light source assembly 10 of the present embodiment includes a light source 11 and a light guide plate 12. The light source 11 has a plurality of light emitting surfaces 111, and each light emitting surface 111 has a light emission angle range 112. . The light guide plate 12 has a bottom surface 121 and a light exit surface 122 facing each other, and at least one side surface 123 that connects the bottom surface 121 and the light exit surface 122, and the bottom surface 121 has a storage tank 124 that houses the light source 11. These light emitting surfaces 111 face the at least one side surface 123. The light guide plate 12 further includes a plurality of groove structures 125 that are located within the light emission angle range 112 of the light emission surfaces 111 and reflect some of the light rays emitted from the light emission surfaces 111 to the outside of the light emission angle range 112. .

本実施例の光源１１は例えば一つの発光素子を含み、この発光素子は例えば複数の発光面１１１を有し、図１は四つの発光面１１１を例としている。具体的に言うと、この発光素子は例えば四つの発光側面を有する発光ダイオードである。発光面１１１それぞれは光軸Ｎを有し、かつ光軸Ｎは各発光面１１１の発光中心点の法線である。また、発光角度範囲１１２は発光素子自体の規格の発光角度によって決まり、発光角度とはパワー半値角（ｈａｌｆ ｐｏｗｅｒ ａｎｇｌｅ）、即ち５０％の発光強度に対応する角度である。例を挙げると、パワー半値角が±６０度である場合、発光角度範囲１１２は±６０度の間になる。   The light source 11 of this embodiment includes, for example, one light emitting element, and the light emitting element has, for example, a plurality of light emitting surfaces 111, and FIG. Specifically, this light emitting element is, for example, a light emitting diode having four light emitting side surfaces. Each light emitting surface 111 has an optical axis N, and the optical axis N is a normal line of the light emission center point of each light emitting surface 111. The light emission angle range 112 is determined by the standard light emission angle of the light emitting element itself, and the light emission angle is a half power angle, that is, an angle corresponding to a light emission intensity of 50%. For example, when the half-power angle is ± 60 degrees, the emission angle range 112 is between ± 60 degrees.

本実施例の導光板１２は、例えば四つの側面１２３を有し、これらの側面１２３が底面１２１と出光面１２２の間を接続するが、本発明は導光板１２の側面１２３の数及び導光板１２の具体的な形状について限定しない。例を挙げると、底面と出光面が円形である実施例において、導光板は円盤形状になり、かつ一つの環状側面のみを有する。図１の実施例において、導光板１２は四つの側面１２３を有する四角形構造であり、光源１１は四つの発光面１１１を有する発光ダイオードであり、かつ各発光面１１１がそれぞれ導光板１２の各側面１２３に対応し、発光面１１１それぞれの発光角度範囲１１２が±３０度の間にあって、導光板１２の各隅が発光面１１１それぞれの発光角度範囲１１２の外に位置するため、導光板１２上に隅暗領域が形成される。   The light guide plate 12 of the present embodiment has, for example, four side surfaces 123, and these side surfaces 123 connect between the bottom surface 121 and the light exit surface 122, but the present invention relates to the number of the side surfaces 123 of the light guide plate 12 and the light guide plate. The 12 specific shapes are not limited. For example, in an embodiment in which the bottom surface and the light exit surface are circular, the light guide plate has a disk shape and has only one annular side surface. In the embodiment of FIG. 1, the light guide plate 12 has a quadrangular structure having four side surfaces 123, the light source 11 is a light emitting diode having four light emitting surfaces 111, and each light emitting surface 111 is each side surface of the light guide plate 12. 123, the light emission angle range 112 of each light emitting surface 111 is between ± 30 degrees, and each corner of the light guide plate 12 is located outside the light emission angle range 112 of each light emitting surface 111. A corner dark region is formed.

図１において、収容槽１２４が導光板１２の底面１２１の中心に配置され、光源１１が導光板１２の底面１２１の中心に位置しているが、本発明は底面１２１における収容槽１２４の位置について限定しない。つまり、設計ニーズによって収容槽１２４を導光板１２の底面１２１のその他の適切な位置に配置することも可能であり、光源１１が導光板１２の底面１２１の中心に位置するとは限らない。   In FIG. 1, the storage tank 124 is disposed at the center of the bottom surface 121 of the light guide plate 12, and the light source 11 is positioned at the center of the bottom surface 121 of the light guide plate 12. Not limited. That is, the storage tank 124 can be disposed at another appropriate position on the bottom surface 121 of the light guide plate 12 according to design needs, and the light source 11 is not necessarily located at the center of the bottom surface 121 of the light guide plate 12.

本実施例の溝構造１２５は、主に発光面１１１が発する一部の光線を導光板１２の暗領域まで反射するために用いられる。溝構造１２５は導光板１２の底面１２１または出光面１２２に設置されてもよいが、図１は導光板１２の底面１２１に設置された例である。以下は溝構造１２５の具体的な実施形態を説明するが、本発明はこれに限定されない。   The groove structure 125 of the present embodiment is mainly used to reflect a part of light emitted from the light emitting surface 111 to the dark region of the light guide plate 12. The groove structure 125 may be installed on the bottom surface 121 or the light exit surface 122 of the light guide plate 12, but FIG. 1 is an example installed on the bottom surface 121 of the light guide plate 12. Hereinafter, specific embodiments of the groove structure 125 will be described, but the present invention is not limited thereto.

前記複数の溝構造１２５は例えば複数の第一溝構造１２６を含み、第一溝構造１２６それぞれは、例えば、各発光面１１１の光軸Ｎの両側に配置され、かつ光軸Ｎに隣接する一端１２６２から光源１１及び光軸Ｎを離れる方向へ延伸する２つの第一溝１２６１を含む。また、各第一溝構造１２６の２つの第一溝１２６１の光軸Ｎに隣接する当該端１２６２が例えば繋がっている。互いに繋がっている２つの第一溝１２６１は例えば直線状溝であり、各第一溝構造１２６がＶ字形であるが、本発明は第一溝１２６１それぞれの具体的な形状について限定しない。その他の実施例において、各第一溝１２６１が曲線状溝またはその他の適切な形状の溝であってもよい。さらに、別の実施例において、第一溝構造１２６それぞれの２つの第一溝１２６１の光軸Ｎに隣接する当該端１２６２が繋がらず、光線が隣接する第一溝１２６１の当該端１２６２の間を通過できるようにしてもよい。その他、これらの第一溝１２６１は例えば少なくとも一つの側面１２３の傍まで延伸する。図１の例では、異なる第一溝構造１２６の第一溝１２６１が延伸して導光板１２の異なる側面１２３に繋がっているが、本発明は第一溝構造１２６の第一溝１２６１が延伸して導光板１２の側面１２３に繋がることに限定されず、つまり、第一溝１２６１が側面１２３に繋がらなくてもよい。   The plurality of groove structures 125 include, for example, a plurality of first groove structures 126, and each of the first groove structures 126 is disposed on both sides of the optical axis N of each light emitting surface 111 and is adjacent to the optical axis N, for example. Two first grooves 1261 extending in a direction away from the light source 11 and the optical axis N from 1262 are included. Further, the ends 1262 adjacent to the optical axis N of the two first grooves 1261 of each first groove structure 126 are connected, for example. The two first grooves 1261 connected to each other are, for example, linear grooves, and each first groove structure 126 is V-shaped. However, the present invention does not limit the specific shape of each of the first grooves 1261. In other embodiments, each first groove 1261 may be a curved groove or other suitably shaped groove. Further, in another embodiment, the end 1262 adjacent to the optical axis N of the two first grooves 1261 of each of the first groove structures 126 is not connected, and the light beam passes between the ends 1262 of the adjacent first grooves 1261. It may be allowed to pass through. In addition, these first grooves 1261 extend to the side of at least one side surface 123, for example. In the example of FIG. 1, the first grooves 1261 of the different first groove structures 126 are extended and connected to different side surfaces 123 of the light guide plate 12, but in the present invention, the first grooves 1261 of the first groove structure 126 are extended. In other words, the first groove 1261 may not be connected to the side surface 123.

本実施例の面光源アセンブリ１０において、溝構造１２５が発光面１１１の発光角度範囲１１２の内に設置されているため、導光板１２に入った光線の一部が溝構造１２５によって発光角度範囲１１２の外の暗領域（例えば、隅暗領域）まで反射されるが、一部の光線が溝構造１２５の上方を通って、溝構造１２５に反射されない。このように、出光面１２２の出光を均一にすることで、導光板１２の出光均一性を高めることができる。   In the surface light source assembly 10 of the present embodiment, since the groove structure 125 is installed within the light emission angle range 112 of the light emitting surface 111, a part of the light beam that has entered the light guide plate 12 is emitted by the groove structure 125. However, some of the light rays pass above the groove structure 125 and are not reflected by the groove structure 125. Thus, by making the light output of the light output surface 122 uniform, the light output uniformity of the light guide plate 12 can be improved.

前記第一溝１２６１それぞれと光軸Ｎとの間に例えば鋭角θを有し、この鋭角θの角度を異なるニーズに応じて設計することができる。一実施例において、鋭角θの角度が例えば１０度から８０度の間にあり（つまり、２つの第一溝１２６１の間の夾角が２０度から１６０度の間にあり）、好ましくは、２０度から７０度の間にある（つまり、２つの第一溝１２６１の間の夾角が４０度から１４０度の間にある）。   For example, an acute angle θ is provided between each of the first grooves 1261 and the optical axis N, and the angle of the acute angle θ can be designed according to different needs. In one embodiment, the acute angle θ is, for example, between 10 degrees and 80 degrees (ie, the included angle between the two first grooves 1261 is between 20 degrees and 160 degrees), preferably 20 degrees. From 70 degrees (that is, the included angle between the two first grooves 1261 is between 40 degrees and 140 degrees).

また、依然として暗領域が存在する場合、導光板１２にさらに別の溝を設置し、光線をこの暗領域まで反射してもよい。例を挙げると、導光板１２はさらに、各第一溝構造１２６の両側に配置され、かつ導光板１２の少なくとも一つの側面１２３に隣接する複数の周辺溝１２７を含んでもよい。図１において、同じ第一溝構造１２６の両側に配置された周辺溝１２７は同じ側面１２３に隣接し、異なる第一溝構造１２６の両側に配置された周辺溝１２７は異なる側面１２３に隣接する。各周辺溝１２７は直線状溝（即ち、図１が示すもの）、曲線状溝またはその他の適切な形状の溝であってもよい。これらの周辺溝１２７は対応する発光面１１１の発光角度範囲１１２の内または外に配置され、一部の光線を暗領域まで反射して、導光板１２の出光均一性をさらに高める。また、図１の各周辺溝１２７はその隣の第一溝１２６１と平行ではないが、別の実施例において、各周辺溝１２７がその隣の第一溝１２６１と平行であってもよい。   In addition, when the dark region still exists, another groove may be provided in the light guide plate 12 to reflect the light beam to the dark region. For example, the light guide plate 12 may further include a plurality of peripheral grooves 127 disposed on both sides of each first groove structure 126 and adjacent to at least one side surface 123 of the light guide plate 12. In FIG. 1, peripheral grooves 127 arranged on both sides of the same first groove structure 126 are adjacent to the same side surface 123, and peripheral grooves 127 arranged on both sides of different first groove structures 126 are adjacent to different side surfaces 123. Each peripheral groove 127 may be a straight groove (ie, as shown in FIG. 1), a curved groove, or other suitable shaped groove. These peripheral grooves 127 are disposed inside or outside the light emission angle range 112 of the corresponding light emitting surface 111 and reflect some light rays to the dark region to further improve the light output uniformity of the light guide plate 12. Further, each peripheral groove 127 of FIG. 1 is not parallel to the adjacent first groove 1261, but in another embodiment, each peripheral groove 127 may be parallel to the adjacent first groove 1261.

導光板１２の底面１２１に複数の点状微構造Ｓを設けることが可能であり、これらの点状微構造Ｓは導光板１２内における光線の全反射を乱し、光線を出光面１２２から出射させる。導光板１２の出光均一性を一層高めるため、これらの点状微構造Ｓの分布密度を光源１１に隣接するところから光源１１を離れる方向へ次第に密になり、かつ溝構造１２５に隣接するところから溝構造１２５を離れる方向へ次第に密になるようにしてもよい。   A plurality of dot-like microstructures S can be provided on the bottom surface 121 of the light guide plate 12, and these dot-like microstructures S disturb the total reflection of light rays in the light guide plate 12 and emit light rays from the light exit surface 122. Let In order to further improve the light output uniformity of the light guide plate 12, the distribution density of these point-like microstructures S gradually becomes dense in the direction away from the light source 11 from the position adjacent to the light source 11 and from the position adjacent to the groove structure 125. The groove structure 125 may gradually become denser in the direction away from the groove structure 125.

なお、前記溝構造１２５の深さＤ１によって光線反射の比例が決まり、即ち、溝構造１２５の深さＤ１が大きいほど、光線が溝構造１２５に反射される比例が増し、溝構造１２５の深さＤ１が小さいほど、光線が溝構造１２５に反射される比例が減る。本実施例において、同じ溝構造１２５の深さＤ１が例えば同じであり、かつ溝構造１２５の深さＤ１と導光板１２の厚さＤ２の比例を設計ニーズに応じて調整することができる。一実施例において、溝構造１２５の深さＤ１は例えば導光板１２の厚さＤ２の半分である。その他の実施例において、同じ溝構造１２５の深さＤ１が異なってもよく、溝構造１２５の深さＤ１の変化は、異なる設計ニーズに応じて調整することができる。例を挙げると、溝構造１２５の深さＤ１は光源１１に隣接するところから光源１１を離れる方向へ次第に大きくなってもよい。その他、同じ周辺溝１２７の深さが一致してもまたは一致しなくてもよい。さらに、同じ第一溝１２６１または同じ周辺溝１２７の幅が一致してもまたは一致しなくてもよい。   The proportionality of light reflection is determined by the depth D1 of the groove structure 125. That is, the greater the depth D1 of the groove structure 125, the greater the proportion of reflected light rays to the groove structure 125 and the depth of the groove structure 125. The smaller D1 is, the less proportional the light beam is reflected to the groove structure 125. In this embodiment, the depth D1 of the same groove structure 125 is the same, for example, and the proportionality between the depth D1 of the groove structure 125 and the thickness D2 of the light guide plate 12 can be adjusted according to design needs. In one embodiment, the depth D1 of the groove structure 125 is half of the thickness D2 of the light guide plate 12, for example. In other embodiments, the depth D1 of the same groove structure 125 may be different, and the change in the depth D1 of the groove structure 125 can be adjusted according to different design needs. For example, the depth D1 of the groove structure 125 may gradually increase from a position adjacent to the light source 11 in a direction away from the light source 11. In addition, the depth of the same peripheral groove 127 may or may not match. Furthermore, the widths of the same first groove 1261 or the same peripheral groove 127 may or may not match.

図１の光源１１は複数の発光面１１１を有する発光素子を例としたが、その他の実施例において、光源が複数の発光素子を含み、発光素子それぞれが一つまたは複数の発光面を有してもよい。例を挙げると、図３は本発明の別の実施例の面光源アセンブリの光源の概略図である。図３において、光源１１ａは四つの発光素子１１３を含み、各発光素子１１３が一つの発光面１１１を有し、この四つの発光素子１１３は発光面１１１が外向きに、一つの四角形を成すように設置されている。図１の光源１１の代わりにこの光源１１ａを用いてもよい。   Although the light source 11 in FIG. 1 is an example of a light emitting element having a plurality of light emitting surfaces 111, in other embodiments, the light source includes a plurality of light emitting elements, and each light emitting element has one or more light emitting surfaces. May be. By way of example, FIG. 3 is a schematic view of a light source of a surface light source assembly of another embodiment of the present invention. In FIG. 3, the light source 11a includes four light emitting elements 113, and each light emitting element 113 has one light emitting surface 111, and the four light emitting elements 113 form one rectangle with the light emitting surface 111 facing outward. Is installed. This light source 11a may be used instead of the light source 11 of FIG.

図４は本発明の別の実施例の面光源アセンブリの底面概略図である。図４を参照すると、本実施例の面光源アセンブリ１０ｂと図１の面光源アセンブリ１０が類似するが、主な相違点は、本実施例の導光板１２ｂの溝構造１２５ｂは前記第一溝構造１２６を含むほか、さらに、各第一溝構造１２６と光源１１との間に配置された複数の第二溝構造１２８を含む。第二溝構造１２８はそれぞれ例えば２つの第二溝１２８１を含み、第二溝１２８１は各発光面１１１の光軸Ｎの両側に配置され、かつ光軸Ｎに隣接する一端１２８２から光源１１及び光軸Ｎを離れる方向へ延伸する。第二溝１２８１も出光面１２２が提供する一部の光線を発光角度範囲１１２の外の暗領域まで反射することが可能であり、第二溝１２８１によって改善される暗領域は第一溝１２６１で改善できなかった暗領域、または第一溝１２６１で改善できるが改善効果が不十分だった暗領域である可能性がある。言い換えれば、第二溝１２８１は第一溝１２６１による導光板１２ｂの暗領域改善を補助することができる。本実施例において、導光板１２の四つの側面１２３が同じ長さであり、かつ四角形構造を形成するため、光源１１に隣接する各第二溝１２８１の長さが長すぎることによって各第二溝１２８１の上方を通過する光線が少なくなり、各第二溝１２８１と各第一溝１２６１の間に暗領域が形成されることを防ぐために、各第一溝１２６１の長さが例えば各第二溝１２８１の長さより大きい。別の実施例において、例えば導光板１２が矩形構造である場合、導光板１２の長手側面と光源との間の距離が比較的に短いため、各第二溝１２８１と各第一溝１２６１との間の距離が比較的に近く、この場合、各第二溝１２８１の長さに起因する各第二溝１２８１と各第一溝１２６１との間の暗領域影響が比較的に小さいため、導光板１２の長手側面に隣接する第一溝１２６１の長さが第二溝１２８１の長さに等しくまたは小さくてもよい。以上の説明からわかるように、第一溝１２６１の長さと第二溝１２８１の長さは、異なる設計において異なる変化を見せるため、本発明はこれに限定されない。また、前記第二溝１２８１は直線状溝（即ち、図４が示すもの）、曲線状溝またはその他の適切な形状の溝であってもよい。また、本実施例の各第二溝構造１２８の２つの第二溝１２８１の光軸Ｎに隣接する当該端１２８２の間に例えば間隔Ｄ３を有するが、互いに繋がってもよく、設計ニーズに応じて決めるとする。また、本実施例の導光板１２ｂは図１の周辺溝１２７を含んでもよい。本発明は第一溝１２６１の長さと第二溝１２８１の長さについて限定しない。   FIG. 4 is a schematic bottom view of a surface light source assembly according to another embodiment of the present invention. Referring to FIG. 4, the surface light source assembly 10b of this embodiment is similar to the surface light source assembly 10 of FIG. 1, except that the groove structure 125b of the light guide plate 12b of this embodiment is the first groove structure. 126, and further includes a plurality of second groove structures 128 arranged between each first groove structure 126 and the light source 11. Each of the second groove structures 128 includes, for example, two second grooves 1281, and the second grooves 1281 are arranged on both sides of the optical axis N of each light emitting surface 111, and from one end 1282 adjacent to the optical axis N, the light source 11 and the light. Stretch in a direction away from the axis N. The second groove 1281 can also reflect a part of the light beam provided by the light exit surface 122 to a dark region outside the emission angle range 112. The dark region improved by the second groove 1281 is the first groove 1261. There may be a dark region that could not be improved, or a dark region that could be improved by the first groove 1261 but the improvement effect was insufficient. In other words, the second groove 1281 can assist the first groove 1261 in improving the dark region of the light guide plate 12b. In this embodiment, since the four side surfaces 123 of the light guide plate 12 have the same length and form a quadrangular structure, the length of each second groove 1281 adjacent to the light source 11 is too long. The length of each first groove 1261 is set to, for example, each second groove in order to prevent a light beam passing above 1281 from being reduced and a dark region from being formed between each second groove 1281 and each first groove 1261. Greater than 1281 length. In another embodiment, for example, when the light guide plate 12 has a rectangular structure, the distance between the long side surface of the light guide plate 12 and the light source is relatively short. In this case, since the influence of the dark region between each second groove 1281 and each first groove 1261 due to the length of each second groove 1281 is relatively small, the light guide plate The length of the first groove 1261 adjacent to the 12 longitudinal sides may be equal to or smaller than the length of the second groove 1281. As can be seen from the above description, the length of the first groove 1261 and the length of the second groove 1281 show different changes in different designs, and the present invention is not limited to this. Further, the second groove 1281 may be a linear groove (that is, the one shown in FIG. 4), a curved groove, or other appropriately shaped groove. Moreover, although there exists the space | interval D3 between the said end 1282 adjacent to the optical axis N of the two 2nd groove | channels 1281 of each 2nd groove | channel structure 128 of a present Example, it may connect mutually and according to design needs. Let's decide. Further, the light guide plate 12b of the present embodiment may include the peripheral groove 127 of FIG. The present invention does not limit the length of the first groove 1261 and the length of the second groove 1281.

図５は本発明の別の実施例の面光源アセンブリの底面概略図である。図５を参照すると、本実施例の面光源アセンブリ１０ｃと図１の面光源アセンブリ１０が類似するが、主な相違点は、本実施例の導光板１２ｃの複数の溝構造１２５ｃは第一溝構造１２６を含むほか、これらの第一溝１２６１の延伸経路Ｐ上に配置され、かつ導光板１２ｃの少なくとも一つの側面１２３に隣接する複数の延伸溝１２９をさらに含み、かつ、同一延伸経路Ｐ上の延伸溝１２９及び第一溝１２６１の間に間隔Ｄ４を有する。本実施例において、各第一溝１２６１が導光板１２ｃの側面１２３まで延伸せず、各第一溝１２６１に対応する延伸溝１２９が導光板１２ｃに隣接する側面１２３まで延伸し、かつ側面１２３に連接しても連接しなくてもよい。間隔Ｄ４を設置するか否か、及び間隔Ｄ４の長さは、異なるニーズに応じて調整可能である。また、本実施例の導光板１２ｃの複数の溝構造１２５ｃは、図４の第二溝構造１２８及び図１の周辺溝１２７を含んでもよい。   FIG. 5 is a schematic bottom view of a surface light source assembly according to another embodiment of the present invention. Referring to FIG. 5, the surface light source assembly 10 c of the present embodiment is similar to the surface light source assembly 10 of FIG. 1, but the main difference is that the plurality of groove structures 125 c of the light guide plate 12 c of the present embodiment is the first groove. In addition to the structure 126, the first groove 1261 further includes a plurality of extending grooves 129 disposed on the extending path P of the first groove 1261 and adjacent to at least one side surface 123 of the light guide plate 12c, and on the same extending path P. A gap D4 is provided between the extending groove 129 and the first groove 1261. In the present embodiment, each first groove 1261 does not extend to the side surface 123 of the light guide plate 12c, and the extension groove 129 corresponding to each first groove 1261 extends to the side surface 123 adjacent to the light guide plate 12c, and on the side surface 123. It may be connected or not connected. Whether the interval D4 is installed and the length of the interval D4 can be adjusted according to different needs. Further, the plurality of groove structures 125c of the light guide plate 12c of the present embodiment may include the second groove structure 128 of FIG. 4 and the peripheral groove 127 of FIG.

図６は本発明の別の実施例の面光源アセンブリの断面概略図であり、図６に点状微構造が省略されている。図６が示すように、本実施例の面光源アセンブリ１０ｄと図２の面光源アセンブリ１０が類似するが、主な相違点は本実施例の導光板１２ｄの出光面１２２ｄは例えば凸面である。出光面１２２ｄの高さが例えば中心から側面１２３へ次第に低くなる。前記凸面は曲面であっても、または中心から側面１２３へ傾斜する複数の斜面を含んでもよい。出光面１２２ｄを凸面に設計することで、導光板１２ｄ内の光線が出光面１２２ｄにおける入射角を変更することができて、本来なら導光板１２ｄの側面１２３まで反射されて側面１２３から漏れる光線（例えば、光線Ｌ）が、導光板１２ｄの底面１２１まで反射され、かつ底面１２１の点状微構造（図示せず）に反射されて出光面１２２ｄから出射される。このように、光板周辺の光漏れ問題を改善できる。また、前記任意一つの実施例の導光板の出光面に凸面を設置してもよい。   FIG. 6 is a schematic cross-sectional view of a surface light source assembly according to another embodiment of the present invention, and the point-like microstructure is omitted from FIG. As shown in FIG. 6, the surface light source assembly 10d of this embodiment is similar to the surface light source assembly 10 of FIG. 2, but the main difference is that the light exit surface 122d of the light guide plate 12d of this embodiment is, for example, a convex surface. For example, the height of the light exit surface 122d gradually decreases from the center to the side surface 123. The convex surface may be a curved surface or may include a plurality of inclined surfaces inclined from the center to the side surface 123. By designing the light exit surface 122d to be a convex surface, the light beam in the light guide plate 12d can change the incident angle on the light output surface 122d, and is originally reflected to the side surface 123 of the light guide plate 12d and leaks from the side surface 123 ( For example, the light ray L) is reflected to the bottom surface 121 of the light guide plate 12d, reflected by a point-like microstructure (not shown) on the bottom surface 121, and emitted from the light exit surface 122d. Thus, the light leakage problem around the light plate can be improved. Moreover, you may install a convex surface in the light-emitting surface of the light-guide plate of the said arbitrary one Example.

図７は本発明の一実施例のバックライトモジュールの概略図である。図７が示すように、本実施例のバックライトモジュール２０は複数の面光源アセンブリ２１を含み、面光源アセンブリ２１それぞれが光源２１１及び導光板２１２を含み、かつこれらの面光源アセンブリ２１の導光板２１２が繋ぎ合わせられて一体になっている。面光源アセンブリ２１は前記任意一つの実施例の面光源アセンブリであり、例えば、面光源アセンブリ１０、１０ｂ、１０ｃ、１０ｄであってもよい。バックライトモジュール２０は前記任意一つの実施例の面光源アセンブリを用いるため、輝度均一性に優れた面光源を提供できる。   FIG. 7 is a schematic view of a backlight module according to an embodiment of the present invention. As shown in FIG. 7, the backlight module 20 of the present embodiment includes a plurality of surface light source assemblies 21, each of the surface light source assemblies 21 includes a light source 211 and a light guide plate 212, and the light guide plates of these surface light source assemblies 21. 212 are joined together. The surface light source assembly 21 is the surface light source assembly of any one of the above embodiments, and may be, for example, the surface light source assemblies 10, 10b, 10c, and 10d. Since the backlight module 20 uses the surface light source assembly of any one of the above embodiments, a surface light source with excellent luminance uniformity can be provided.

以上を纏めると、本発明の実施例の面光源アセンブリは、導光板が複数の溝構造を有し、これらの溝構造は光源の発光面が発する一部光線を発光面の発光角度範囲の外まで反射できるため、従来の複合式バックライトモジュールの導光板の隅暗領域の問題を改善し、輝度の均一性を高めることができる。本発明の実施例のバックライトモジュールは複数の前記面光源アセンブリを用いるため、亮度均一性に優れた面光源を提供できる。   In summary, in the surface light source assembly according to the embodiment of the present invention, the light guide plate has a plurality of groove structures. Therefore, the problem of the corner dark region of the light guide plate of the conventional composite backlight module can be improved, and the luminance uniformity can be enhanced. Since the backlight module of the embodiment of the present invention uses a plurality of the surface light source assemblies, a surface light source having excellent brightness uniformity can be provided.

以上に記載したのは本発明の好ましい実施例であり、本発明の実施範囲がこれに限定されるべきではない。即ち、本発明の請求の範囲および発明の詳細な説明を基に行った簡単な等価変更および修正も本発明の請求範囲内に属する。また、本発明の実施例または請求項のいずれかが必ずしも本発明の開示した目的または利点または特徴を全て満たすとは限らない。その他、要約書と発明の名称は特許文献の検索のために用いられるものであり、本発明の権利範囲を制限するものではない。また、明細書または請求の範囲に言及された「第一」、「第二」などの用語は、素子（ｅｌｅｍｅｎｔ）を命名するための名称または異なる実施例若しくは範囲を区別するためのものであり、素子の数量の上限または下限を制限するものではない。   What has been described above is a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereto. That is, simple equivalent changes and modifications made based on the claims of the present invention and the detailed description of the invention also belong to the claims of the present invention. In addition, any of the embodiments or claims of the present invention does not necessarily satisfy all of the disclosed objects, advantages, or features of the present invention. In addition, the abstract and the title of the invention are used for searching patent documents, and do not limit the scope of rights of the present invention. Further, terms such as “first”, “second”, etc. mentioned in the specification or claims are for distinguishing names or different embodiments or ranges for naming elements. It does not limit the upper limit or lower limit of the quantity of elements.

１０、１０ｂ、１０ｃ、１０ｄ、２１ 面光源アセンブリ
１１、１１ａ、２１１ 光源
１１１ 発光面
１１２ 発光角度範囲
１１３ 発光素子
１２、１２ｂ、１２ｃ、１２ｄ、２１２ 導光板
１２１ 底面
１２２、１２２ｄ 出光面
１２３ 側面
１２４ 収容槽
１２５、１２５ｂ、１２５ｃ 溝構造
１２６ 第一溝構造
１２６１ 第一溝
１２６２、１２８２ 端
１２７ 周辺溝
１２８ 第二溝構造
１２８１ 第二溝
１２９ 延伸溝
２０ バックライトモジュール
Ｄ１ 深さ
Ｄ２ 厚さ
Ｄ３、Ｄ４ 間隔
Ｌ 光線
Ｎ 光軸
Ｓ 延伸経路
Ｓ 点状微構造
θ 鋭角 10, 10b, 10c, 10d, 21 Surface light source assembly 11, 11a, 211 Light source 111 Light emitting surface 112 Light emitting angle range 113 Light emitting element 12, 12b, 12c, 12d, 212 Light guide plate 121 Bottom surface 122, 122d Light exit surface 123 Side surface 124 Tank 125, 125b, 125c Groove structure 126 First groove structure 1261 First groove 1262, 1282 End 127 Peripheral groove 128 Second groove structure 1281 Second groove 129 Stretched groove 20 Backlight module D1 Depth D2 Thickness D3, D4 Interval L ray N optical axis S stretching path S point-like microstructure θ acute angle

Claims (19)

面光源アセンブリであって、
光源及び導光板を含み、
前記光源は複数の発光面を有し，前記複数の発光面がそれぞれ発光角度範囲を有し、
前記導光板は対向する底面と出光面、及び前記底面と前記出光面との間を接続する少なくとも一つの側面を有し、
前記底面は前記光源を収容する収容槽を有し、
前記複数の発光面は前記少なくとも一つの側面に面し、
前記導光板は、前記複数の発光面の前記発光角度範囲の内に位置する複数の溝構造をさらに有し、前記複数の発光面が発する一部の光線を前記発光角度範囲の外まで反射することを特徴とする面光源アセンブリ。 A surface light source assembly,
Including a light source and a light guide plate,
The light source has a plurality of light emitting surfaces, each of the plurality of light emitting surfaces has a light emission angle range,
The light guide plate has a bottom surface and a light exit surface facing each other, and at least one side surface connecting between the bottom surface and the light exit surface,
The bottom surface has a storage tank for storing the light source,
The plurality of light emitting surfaces face the at least one side surface;
The light guide plate further includes a plurality of groove structures positioned within the light emission angle range of the plurality of light emission surfaces, and reflects a part of light emitted from the plurality of light emission surfaces to the outside of the light emission angle range. A surface light source assembly. 前記複数の溝構造が前記導光板の前記底面に設置されることを特徴とする、請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein the plurality of groove structures are installed on the bottom surface of the light guide plate. 前記複数の溝構造が前記導光板の前記出光面に設置されることを特徴とする、請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein the plurality of groove structures are installed on the light exit surface of the light guide plate. 前記複数の発光面はそれぞれ光軸を有し、
前記複数の溝構造は複数の第一溝構造を含み、
前記複数の第一溝構造はそれぞれ、前記複数の発光面の前記光軸の両側に配置され、かつ前記光軸に隣接する一端から前記光源及び前記光軸を離れる方向へ延伸する２つの第一溝を含むことを特徴とする、請求項１に記載の面光源アセンブリ。 Each of the plurality of light emitting surfaces has an optical axis;
The plurality of groove structures includes a plurality of first groove structures;
Each of the plurality of first groove structures is disposed on both sides of the optical axis of the plurality of light emitting surfaces, and extends in a direction away from the light source and the optical axis from one end adjacent to the optical axis. The surface light source assembly according to claim 1, further comprising a groove. 前記複数の第一溝構造それぞれの２つの前記第一溝の前記光軸に隣接する前記端が連接していることを特徴とする、請求項４に記載の面光源アセンブリ。   The surface light source assembly according to claim 4, wherein the ends adjacent to the optical axis of the two first grooves of each of the plurality of first groove structures are connected to each other. 各前記第一溝と前記光軸との間に挟まれた鋭角は１０度から８０度の間にあることを特徴とする請求項４に記載の面光源アセンブリ。   The surface light source assembly according to claim 4, wherein an acute angle between each of the first grooves and the optical axis is between 10 degrees and 80 degrees. 各前記第一溝と前記光軸との間に挟まれた鋭角は２０度から７０度の間にあることを特徴とする請求項６に記載の面光源アセンブリ。   The surface light source assembly according to claim 6, wherein an acute angle between each of the first grooves and the optical axis is between 20 degrees and 70 degrees. 前記複数の溝構造はさらに、前記複数の第一溝構造それぞれと前記光源との間に配置される複数の第二溝構造を含み、
前記複数の第二溝構造はそれぞれ、前記発光面それぞれの前記光軸の両側に配置され、かつ前記光軸に隣接する一端から前記光源及び前記光軸を離れる方向へ延伸する２つの第二溝を含むことを特徴とする請求項４に記載の面光源アセンブリ。 The plurality of groove structures further includes a plurality of second groove structures disposed between each of the plurality of first groove structures and the light source,
Each of the plurality of second groove structures is disposed on both sides of the optical axis of each of the light emitting surfaces, and extends from the one end adjacent to the optical axis in a direction away from the light source and the optical axis. The surface light source assembly according to claim 4, comprising: 各前記第一溝の長さが各前記第二溝の長さより大きいことを特徴とする請求項８に記載の面光源アセンブリ。   9. The surface light source assembly according to claim 8, wherein a length of each of the first grooves is greater than a length of each of the second grooves. 各前記第二溝構造の２つの前記第二溝の前記光軸に隣接する前記端の間に間隔があることを特徴とする請求項８に記載の面光源アセンブリ。   9. The surface light source assembly according to claim 8, wherein there is a gap between the ends of the two second grooves of each of the second groove structures adjacent to the optical axis. 前記第一溝は前記少なくとも一つの側面の傍まで延伸することを特徴とする請求項４に記載の面光源アセンブリ。   The surface light source assembly of claim 4, wherein the first groove extends to the side of the at least one side surface. 前記複数の溝構造はさらに、各前記第一溝の延伸経路上に配置され、かつ前記導光板の前記少なくとも一つの側面に隣接する複数の延伸溝を含み、
同じ延伸経路上の前記延伸溝及び前記第一溝との間に間隔があることを特徴とする請求項４に記載の面光源アセンブリ。 The plurality of groove structures further includes a plurality of extending grooves disposed on the extending path of each of the first grooves and adjacent to the at least one side surface of the light guide plate;
5. The surface light source assembly according to claim 4, wherein there is a gap between the extending groove and the first groove on the same extending path. 前記導光板はさらに、各前記第一溝構造の両側に配置され、かつ前記導光板の前記少なくとも一つの側面に隣接する複数の周辺溝を含むことを特徴とする請求項４に記載の面光源アセンブリ。   The surface light source according to claim 4, wherein the light guide plate further includes a plurality of peripheral grooves disposed on both sides of each of the first groove structures and adjacent to the at least one side surface of the light guide plate. assembly. 前記導光板の前記底面に複数の点状微構造が設けられ、
前記複数の点状微構造の分布密度が前記光源に隣接するところから前記光源を離れる方向へ次第に密になり、かつ前記複数の溝構造に隣接するところから前記複数の溝構造を離れる方向へ次第に密になることを特徴とする請求項１に記載の面光源アセンブリ。 A plurality of dot-like microstructures are provided on the bottom surface of the light guide plate,
The distribution density of the plurality of point-like microstructures gradually becomes dense in the direction away from the light source from the position adjacent to the light source, and gradually in the direction away from the groove structure from the position adjacent to the plurality of groove structures. The surface light source assembly according to claim 1, wherein the surface light source assembly is dense. 前記光源は発光素子を含み、前記発光素子が前記複数の発光面を有することを特徴とする請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein the light source includes a light emitting element, and the light emitting element has the plurality of light emitting surfaces. 前記光源は複数の発光素子を含み、前記複数それぞれの発光素子が一つの前記発光面を有することを特徴とする請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein the light source includes a plurality of light emitting elements, and each of the plurality of light emitting elements has one light emitting surface. 前記複数の溝構造中の少なくとも一つの溝構造の深さが異なることを特徴とする請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein a depth of at least one groove structure in the plurality of groove structures is different. 前記導光板の前記出光面が凸面であることを特徴とする、請求項１に記載の面光源アセンブリ。   The surface light source assembly according to claim 1, wherein the light exit surface of the light guide plate is a convex surface. バックライトモジュールであって、
請求項１から１８のいずれか一項に記載された前記面光源アセンブリを複数含み、
前記面光源アセンブリの前記導光板が一体に繋ぎ合わせられることを特徴とするバックライトモジュール。 A backlight module,
A plurality of the surface light source assemblies according to any one of claims 1 to 18,
The backlight module, wherein the light guide plates of the surface light source assembly are joined together.
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